Why do children get Kawasaki disease?

Written by Li Jiao Yan

Neonatology

Updated on September 06, 2024

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Kawasaki disease has an unclear pathogenesis. It is speculated that it may be related to infections by microorganisms or other pathogens, familial genetic susceptibility, or autoimmune functions. Currently, the entire medical history is unclear, and there is no specific epidemiology identified for the onset of the disease; it can occur in any of the four seasons. The disease primarily affects infants and young children, with about 80% of cases occurring in children under five years of age. The ratio of male to female incidence is approximately 1.5:1. Thus, Kawasaki disease is most commonly seen in infants and young children. Currently, there is no definitive explanation for the mechanism of the disease.

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Written by Li Jiao Yan

Neonatology

54sec

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Does Kawasaki disease affect lifespan?

Kawasaki disease, also known as mucocutaneous lymph node syndrome, has an unclear pathogenesis. Its pathological changes primarily involve a systemic circulatory disease characterized by vasculitis. A severe complication can lead to cardiac lesions. Generally, Kawasaki disease is self-limiting and most cases have a good prognosis. However, if Kawasaki disease is not effectively treated and results in associated coronary artery aneurysms or large artery aneurysms, it could lead to acquired heart disease. Such cardiac issues could potentially affect cardiac function later on. This might impact lifespan, but if Kawasaki disease is treated aggressively and effectively, the prognosis is good and the impact on future health is minimal.

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Written by Yan Xin Liang

Pediatrics

52sec

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Is Kawasaki disease characterized by eye discharge?

Kawasaki disease is an autoimmune vasculitis that can affect blood vessels throughout the body and various organs, but the most severe impact is typically on the coronary arteries, which can lead to dilation of the coronary arteries or the possibility of forming coronary artery aneurysms. The disease can cause conjunctival congestion, but this is a manifestation of aseptic conjunctivitis, meaning it does not cause, nor does it result in, purulent secretions, in other words, it does not cause eye discharge. Therefore, if a patient with Kawasaki disease has purulent eye discharge, it is possible that they have a concurrent bacterial conjunctivitis. Thus, generally, eyes affected by Kawasaki disease do not have eye discharge but may appear dry and red.

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Written by Li Jiao Yan

Neonatology

1min 18sec

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Does Kawasaki disease cause vomiting?

Kawasaki disease is a disease with no clear etiology, commonly seen in infants and toddlers, with eighty percent of cases occurring in children under five years old. Its main pathological change is systemic vasculitis. The main symptoms include fever, congested and cracked lips, diffuse congestion of the oral mucosa, swollen tongue papillae, and strawberry tongue. Other symptoms may include swelling of the hands and feet, polymorphous erythema, and enlarged lymph nodes. There could be subsequent cardiac complications, primarily affecting the coronary arteries. Kawasaki disease may cause vomiting due to the diffuse congestion in the oral cavity, and the pharynx might also be congested. When children experience significant congestion, their laryngeal reflex might be sensitive, possibly leading to vomiting. Furthermore, children with Kawasaki disease might develop secondary infections from other bacteria and viruses, which could also lead to symptoms like vomiting. Therefore, the manifestations of Kawasaki disease can vary, and if significant vomiting occurs, it should be investigated to determine the cause.

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Written by Li Jiao Yan

Neonatology

1min 53sec

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What is Kawasaki Disease?

Kawasaki disease was first reported in 1967 by Tomisaku Kawasaki in Japan and is also known as mucocutaneous lymph node syndrome. Approximately 15% to 20% of cases experience coronary artery damage after effective treatment. Since 1970, cases have been reported worldwide, with a higher incidence among Asians. As diagnostic capabilities improve globally, the incidence of this disease is decreasing. This disease occurs sporadically or in small epidemics and can occur in any season, most commonly affecting infants and young children, with 80% of cases occurring in children under five years of age. The cause of the disease is unclear, and the mechanism of onset is also not well understood, with the primary pathological change being systemic vasculitis. The main clinical symptoms are high fever between 39 to 40 degrees Celsius, followed by ineffectiveness of antibiotic treatment, and conjunctival congestion. Other symptoms include congested, cracked lips, diffuse congestion of the oral mucosa, indurative edema of hands and feet with emerging erythema, polymorphous skin eruptions and scarlet fever-like rash, and enlarged cervical lymph nodes, which can be unilateral or bilateral, hard and tender, but not red on the surface. There may be complications involving coronary artery damage, and potential complications such as myocarditis, pericarditis, endocarditis, and arrhythmias. Additionally, there may be other associated symptoms such as interstitial pneumonia, digestive system symptoms, joint pain, and arthritis.

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Written by Quan Xiang Mei

Pediatrics

1min

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How to alleviate vomiting in Kawasaki disease

When children with Kawasaki disease experience vomiting, the first step is to refrain from eating and drinking, including water, for one to two hours after vomiting to avoid burdening the stomach and intestines. If vomiting subsides after fasting, there is no need for medication temporarily. However, if there is no significant relief and bloating is evident, it is necessary to treat for bowel movement and gas release. At this time, oral medications that aid in digestion, such as digestive tonics, are acceptable. If relief is still not achieved, intravenous fluid supplementation and medications that enhance gastrointestinal motility can be administered. Parents can also keep the abdomen warm and, centering around the navel, perform clockwise abdominal massages to help alleviate the symptoms of vomiting.